Antenna apparatus and electronic device

Abstract

A foldable electronic device having a primary screen portion with a primary-screen antenna, and a secondary screen portion with a secondary-screen antenna. Positions of the primary-screen antenna and the secondary-screen antenna overlap when the electronic device is folded. The primary-screen antenna and the secondary-screen antenna may excite two antenna patterns of high isolation. In this way, even if the primary-screen antenna and the secondary-screen antenna operate on a same frequency band and overlap, good isolation performance can also be obtained.

What is claimed is: 
     
       1. An electronic device, comprising a first device body, a second device body, and a rotating shaft, wherein the first device body and the second device body are connected through the rotating shaft, and the electronic device is configured to be foldable at the rotating shaft; and
 the electronic device further comprises a first antenna disposed on the first device body and a second antenna disposed on the second device body, wherein 
 the first antenna comprises a strip-shaped first conductor and a first feed point disposed on the first conductor, wherein two ends of the first conductor are open, and a distance from the first feed point to a middle position of the first conductor is greater than or equal to zero and less than 1/16 of an operating wavelength of the first antenna, or a distance from the first feed point to one of the open ends of the first conductor is greater than or equal to zero and less than 1/16 of an operating wavelength of the first antenna; and 
 the second antenna is an inverted F antenna that comprises a strip-shaped second conductor, and a second feed point and a grounding stub that are disposed on the second conductor, wherein one end of the second conductor is open, the other end of the second conductor is grounded through the grounding stub, and a distance from the second feed point to a connection point for the second conductor and the grounding stub is greater than zero and less than ⅛ of an operating wavelength of the second antenna, or a distance from the second feed point to the open end of the second conductor is greater than or equal to zero and less than ⅛ of an operating wavelength of the second antenna, wherein the first conductor and the second conductor at least partially overlap when the electronic device is in a folded state. 
 
     
     
       2. The electronic device according to  claim 1 , wherein an operating frequency of the first antenna and an operating frequency of the second antenna comprise a same frequency band. 
     
     
       3. The electronic device according  claim 1 , wherein that the first conductor and the second conductor at least partially overlap when the electronic device is in the folded state comprises: a projection of the first conductor and a projection of the second conductor partially or fully overlap on a plane on which the first device body is located or a plane on which the second device body is located. 
     
     
       4. The electronic device according to  claim 1 , wherein the electronic device further comprises a bezel of the first device body and a ground of the first device body; and the first conductor is a strip-shaped conductor disposed on the bezel of the first device body, the first conductor is separated from the ground of the first device body by a first slot, the first slot is formed by hollowing out the ground of the first device body, the first slot is adjacent to the first conductor, and the first conductor is not grounded. 
     
     
       5. The electronic device according to  claim 4 , wherein the electronic device further comprises a bezel of the second device body and a ground of the second device body; and the second conductor is a strip-shaped conductor disposed on the bezel of the second device body, the second conductor and the ground of the second device body are separated by a second slot and connected through the grounding stub, the second slot is formed by hollowing out the ground of the second device body, and the second slot is adjacent to the second conductor. 
     
     
       6. The electronic device according to  claim 5 , wherein the grounding stub is a strip-shaped ground portion that is disposed in a hollowed-out portion of the ground of the second device body and that is connected to the second conductor, or the grounding stub is a metal elastic piece that is disposed on the ground of the second device body and that is connected to the second conductor, or the grounding stub is a conductive stub that extends from the second conductor and that is connected to the ground. 
     
     
       7. The electronic device according to  claim 5 , wherein the bezel of the first device body comprises a first metal bezel between a first gap and a second gap, the first conductor is the first metal bezel; and wherein the bezel of the second device body comprises a second metal bezel between a third gap and the grounding stub, the second conductor is the second metal bezel. 
     
     
       8. An electronic device, comprising a first device body, a second device body, and a rotating shaft, wherein the first device body and the second device body are connected through the rotating shaft, and the electronic device is configured to be foldable at the rotating shaft; and
 the electronic device further comprises a first antenna disposed on the first device body and a second antenna disposed on the second device body, wherein 
 the first antenna comprises a strip-shaped first conductor and a first feed point disposed on the first conductor, wherein two ends of the first conductor are open, and a distance from the first feed point to a middle position of the first conductor is greater than or equal to zero and less than 1/16 of an operating wavelength of the first antenna, or a distance from the first feed point to one of the open ends of the first conductor is greater than or equal to zero and less than 1/16 of an operating wavelength of the first antenna; and 
 the second antenna comprises a second conductor provided with a first slot, two ends of the first slot are closed and grounded, a first side of the first slot is provided with a first gap, a distance from the first gap to a middle position on the first side is less than 1/16 of an operating wavelength of the second antenna, a second feed point is disposed on the first side of the first slot, and a distance from the second feed point to the first gap is greater than zero and less than ⅛ of the operating wavelength of the second antenna, wherein the first conductor and the second conductor at least partially overlap when the electronic device is in a folded state. 
 
     
     
       9. The electronic device according to  claim 8 , wherein an operating frequency of the first antenna and an operating frequency of the second antenna comprise a same frequency band. 
     
     
       10. The electronic device according to  claim 8 , wherein that the first antenna and the second antenna at least partially overlap when the electronic device is in the folded state comprises: a projection of the first antenna and a projection of the second antenna partially or fully overlap on a plane on which the first device body is located or a plane on which the second device body is located. 
     
     
       11. The electronic device according to  claim 8 , wherein the electronic device further comprises a bezel of the first device body and a ground of the first device body; and the first conductor is a strip-shaped conductor disposed on the bezel of the first device body, the first conductor is separated from the ground of the first device body by a second slot, the second slot is formed by hollowing out the ground of the first device body, the second slot is adjacent to the first conductor, and the first conductor is not grounded. 
     
     
       12. The electronic device according to  claim 11 , wherein the bezel of the first device body comprises a first metal bezel between a first gap and a second gap, the first conductor is the first metal bezel. 
     
     
       13. The electronic device according to  claim 8 , wherein the electronic device further comprises a metal bezel of the second device body and a ground of the second device body; and the second conductor comprises the metal bezel of the second device body and the ground of the second device body that enclose to form the first slot, the first slot is disposed in a hollowed-out portion of the ground of the second device body, the first slot is adjacent to the metal bezel of the second device body, the first gap is a gap provided on the metal bezel that is of the second device body and adjacent to the first slot and that forms the first side of the first slot, the first gap is provided on the metal bezel on one side of the second feed point, and no gap is provided on the metal bezel on the other side of the second feed point. 
     
     
       14. An electronic device, comprising a first device body, a second device body, and a rotating shaft, wherein the first device body and the second device body are connected through the rotating shaft, and the electronic device is configured to be foldable at the rotating shaft; and
 the electronic device further comprises a first antenna disposed on the first device body and a second antenna disposed on the second device body, wherein 
 the first antenna comprises a first conductor provided with a first slot, two ends of the first slot are closed and grounded, a first feed point is disposed on a first side of the first slot, and a distance from the first feed point to a middle position on the first side of the first slot is greater than or equal to zero and less than 1/16 of an operating wavelength of the first antenna; and 
 the second antenna is an inverted F antenna that comprises a strip-shaped second conductor, and a second feed point and a grounding stub that are disposed on the second conductor, wherein one end of the second conductor is open, the other end of the second conductor is grounded through the grounding stub, and a distance from the second feed point to a connection point for the second conductor and the grounding stub is greater than zero and less than ⅛ of an operating wavelength of the second antenna, or a distance from the second feed point to the open end of the second conductor is greater than or equal to zero and less than ⅛ of an operating wavelength of the second antenna, wherein the first conductor and the second conductor at least partially overlap when the electronic device is in a folded state. 
 
     
     
       15. The electronic device according to  claim 14 , wherein an operating frequency of the first antenna and an operating frequency of the second antenna comprise a same frequency band. 
     
     
       16. The electronic device according to  claim 14 , wherein that the first antenna and the second antenna at least partially overlap when the electronic device is in the folded state comprises: a projection of the first antenna and a projection of the second antenna partially or fully overlap on a plane on which the first device body is located or a plane on which the second device body is located. 
     
     
       17. The electronic device according to  claim 14 , wherein the electronic device further comprises a bezel of the first device body and a ground of the first device body; and the first conductor is a strip-shaped conductor disposed on the bezel of the first device body, the first conductor and the ground of the first device body are separated by a second slot and connected through the grounding stub, the second slot is formed by hollowing out the ground of the first device body, and the second slot is adjacent to the first conductor. 
     
     
       18. The electronic device according to  claim 17 , wherein the bezel of the first device body comprises a first metal bezel between a first gap and the grounding stub, the first conductor is the first metal bezel. 
     
     
       19. The electronic device according to  claim 17 , wherein the grounding stub is a strip-shaped ground portion that is formed by hollowing out the ground of the first device body and that is connected to the first conductor, or the grounding stub is a metal elastic piece that is disposed on the ground of the first device body and that is connected to the first conductor, or the grounding stub is a conductive stub that extends from the first conductor and that is connected to the ground. 
     
     
       20. The electronic device according to  claim 14 , wherein the electronic device further comprises a metal bezel of the second device body and a ground of the second device body; and the second conductor comprises the metal bezel of the second device body and the ground of the second device body that enclose to form the first slot, the first slot is disposed in a hollowed-out portion of the ground of the second device body, the first slot is adjacent to the metal bezel of the second device body, and no gap is provided on the metal bezel that is of the second device body and adjacent to the first slot and that forms a first side of the first slot.